CN104290463A - Air film support device for inkjet printer - Google Patents
Air film support device for inkjet printer Download PDFInfo
- Publication number
- CN104290463A CN104290463A CN201410305564.6A CN201410305564A CN104290463A CN 104290463 A CN104290463 A CN 104290463A CN 201410305564 A CN201410305564 A CN 201410305564A CN 104290463 A CN104290463 A CN 104290463A
- Authority
- CN
- China
- Prior art keywords
- web
- aperture
- air film
- roller
- transmission equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/004—Platenless printing, i.e. conveying the printing material freely, without support on its back, through the printing zone opposite to the print head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0085—Using suction for maintaining printing material flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0045—Guides for printing material
- B41J11/005—Guides in the printing zone, e.g. guides for preventing contact of conveyed sheets with printhead
Abstract
The invention relates to a system and method that prints on a continuous web of imaging material in a printing machine. One or more inkjet print heads deposit ink on the continuous web of imaging material which is supported by rollers along a transport path. An air film device is disposed between rollers to stabilize flatness the transported web during printing. Undesirable dynamic movement of the web toward or away from the print heads resulting from fluttering, troughing or catenary sag of the web is reduced to minimize drop placement error in both cross-track and process directions.
Description
Technical field
The present invention relates generally to the printer with transmission system and the method for the continuous web of recording medium being conveyed through printer.Printer and the method printed in web comprise the ink jet-print head between the roller being arranged on backweb.
Background technology
Usually, ink-jet printer comprises at least one printhead unit, and the ink droplet of liquid ink is ejected on recording medium or is ejected on image forming to be follow-uply transferred to medium by this printhead unit.Dissimilar ink may be used for ink-jet printer.In the ink-jet printer of a type, use phase change inks.Phase change inks remains solid phase at ambient temperature, but is transformed into liquid phase at elevated temperatures.The ink of the fusing being fed to this unit is ejected on medium or image forming by printhead unit.Such printhead may produce the temperature of about 110 to 120 degrees Celsius.When the ink sprayed is on medium, ink droplets is solidified.Printhead unit sprays ink from multiple inkjet nozzle (being also referred to as injector).
Medium used in direct printer can be web form.In web printer, the medium without interruption be usually arranged in media roll is entrained on the roller that driven by motor.Motor and roller move web to takers-in from feed rolls by printer.Roller is along linear medium paths arrangement, and medium web moves through printer along medium path.
The ink-jet printer of some continuous feed only forms printed drawings picture on the first side of continuous web, a kind of process being called one side printing.The ink-jet printer of one side continuous feed has print head assembly, and this print head assembly has printhead, and this printhead is configured to spray ink in order to the print zone across continuous web, and the width of this print zone is less than the width of web.Print zone is arranged between two parties usually in web, and every side of print zone has suitable clear area.During one side printing, continuous web only through printer once.Particularly, during one side printing, continuous web is pulled through printer only once along web path by rewinder.
The ink-jet printer of some continuous feed is formed on the first side of continuous web and the second side and forms printed drawings picture, and this is called as duplex printing operation.Duplex printing operation in, continuous web passes twice through printer, and be called as half width bilateral cross duplex printing operation.Particularly, continuous web is directed across printer by from web feeding mechanism, to be received on the first side by ink.After continuous web leaves printer, continuous web is reverse by reverse system, is then again directed across printer, to receive ink on the second side.
Web transmission system be used for various application, with by web from a location transmission to another position.In print application, the print components comprising one or more printhead prints images onto in web, and these printheads are positioned near web.When ink is ejected in web, web must keep smooth, and with print components at a distance of predictable distance.Web is uneven or change with the distance of print components and may cause bad print quality.The flatness of the web under printhead comprises two source of errors.When web moves below printhead, the flat out-of-plane vibration caused around the bending stiffness of roller due to the roller degree of eccentricity and web makes the flight time (drop flight time) to change, and this provides process direction and falls to arriving error.Second error comes from the web deformation relative to web thickness, width, Rh and tension force, and this distortion produces due to the web flute profile wrinkle in the span between two rollers." flute profile " wrinkle is the wrinkle with shallow " U " shape.When the tension force of web becomes higher, the amplitude of flute profile also becomes higher.For typical 20 inches wide, 4mil is thick, tension force is 3pli, span is for the web of 13.1 inches, highly for the wavelength of flute profile under .027 inch is about 2.18 inches.Therefore, the spacing of printhead and paper is about 1mm in aqueous inks water system, about 0.5mm in phase change inks print system.Therefore; Flute profile under the amplitude of flat out-of-plane vibration and high-tension may change of flight time error, and paper may be allowed to contact print head surface.
In order to ensure the flatness of web, the solution usually adopted in prior art is stretched web between two rolls, wherein printhead by deposit of ink in the web of movement.This typical layout is for printing between two rolls.In another embodiment, print components between roller, and prints in web, and this web is supported by vacuum platen, and web is moved to platen to provide comparatively stable print surface by this vacuum platen.Vacuum is also referred to as negative pressure in this article.
In another embodiment, print components is positioned to the surface being close to roller.Print by being in web in the web support position provided by roller surface, web keeps relative stability, to be provided for the stabilized platform of deposit of ink.Tangent line printhead being directly placed on roller reduces flat out-of-plane vibration and the flute profile error of the free span produced when implementing on known phase change inks printer.
But in the above-described embodiments, the shake of web and flute profile have impact on the stability of web, and cause printing error thus.In the embodiment of web only by tension support, carry out the place printed at print components, more roller can add on web path, to prevent this shake action, but curvature before more water is forced the bag/volume being maintained minimum 2.5 degree by this, drive this volume to guarantee traction.By increasing more roller, reduce the distance between adjacent roller, and the shake reduced thus.Even if be arranged in the embodiment of roller surface in print zone, the shake of the web before and after print zone also adversely may affect print quality.Along process direction at the first row shower nozzle and last column shower nozzle place, the deviation measured under +/-7mm is up to 44um.
Therefore, expect to provide a kind of web transmission system, it reduces the flute profile of less desirable motion or shake and web, especially causes when being transmitted through print zone.By reducing or eliminating amount of jitter, improve the print quality of text and image.
Summary of the invention
A kind of web transmission equipment, for the continuous web of recording medium is transmitted through printhead, the position of printhead defines print zone, ink deposits in print zone to carry out imaging to continuous web, described web transmission equipment comprises the first roller and the second roller, and each roller is configured in order to web is transmitted through print zone.Air film system is configured in order to provide positive air pressure and negative pressure to form air film to the surface of continuous web, and in continuous web in print zone during imaging, a part for continuous web leans against on this air film.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of web transmission equipment, and this web transmission equipment comprises roller, the air film system that roller is substantially horizontally arranged for making web be moved across, and through multiple printhead, with printed drawings picture in the web of movement.
Fig. 2 is the schematic diagram of web transmission equipment, and this web transmission equipment comprises roller, the air film system that roller is vertically arranged for making web be moved across, and through multiple printhead, with printed drawings picture in the web of movement.
Fig. 3 is the front view of the air film device be arranged between the first roller and the second roller.
Fig. 4 is the perspective view of the air film device be arranged between the first roller and the second roller.
Fig. 5 is the schematic plan view of the air film device comprising multiple region, the region that these regions are used for positive airflow and angrily flow.
Fig. 6 is the sectional view intercepted along the line 6-6 of the air film supporting module of Fig. 4.
Fig. 7 is the plane of the part in multiple regions of the Fig. 5 comprising multiple aperture.
Detailed description of the invention
Fig. 1 is the schematic diagram of web transmission equipment 100, and this web transmission equipment comprises air film system, and this air film system is configured in order to the motion of web of decay for printing.Live roll 102 and non-dynamic roller or rotate freely roller 104 and make the web of recording medium 106 move through the first print zone 108 and the second print zone 110 along process direction 111.Live roll 102 is driven by motor 112, and velocity sensor 114 produces the signal corresponding with the rotary speed of live roll 102.Web is pulled at a predetermined velocity by driven voller 102, and this predetermined speed is selected to and can be printed in print zone 108 and 110 by the first print stations 116 and the second print stations 118.Each print stations 116 and 118 comprises first and second print head arrays of deposit of ink in web.Print head array transversely process direction is arranged on the whole width of web, and this transverse process direction is vertical with process direction in the plane of web.
First print stations comprises the first print head array 120 and the second print head array 122.Second print stations comprises the 3rd print head array 124 and the 4th print head array 126.Each print head array comprises multiple ink ejector, and the width that these ink ejectors stride across web 106 arranges (vertical with transmission direction), and is configured in order to be ejected on the precalculated position of web 106 by ink ink droplet.In one embodiment, ink ejector is spaced apart with the individual point of per inch 1,200 (1200).In addition, the ink of each print head array deposition different colours, to form coloured image.In one embodiment, when web moves to roller 102 from roller 104, cyan, magenta, yellow and black ink are deposited on the first side of web.Each print head array can comprise one or more printheads of atomizing of liquids ink or phase change inks.In certain embodiments, hot ink-jet print head or piezoelectric ink jet printing head is used.Liquid ink printhead sprays ink with the speed of seven (7) to ten (10) rice (mps) per second.Phase change inks printhead sprays ink with the speed of about 3.5mps.
Air film system comprises the first air film supporting module 130 and the second air film supporting module 132.Air film supporting module 130 is arranged in the first print zone 108, adjacent with the second side of web 106, and this second side is relative with the first side of web, and deposit of ink is on this first side.Second air film supporting module 132 is arranged in print zone 110.Each in first and second air film supporting modules 130 and 132 provides air film, to move through print zone in web from the first roller 134, cross air film supporting module 130, move to the second roller 136, cross the second air film supporting module 132, and when moving to the 3rd roller 138, reduce or eliminate the undesirably motion of web.In one embodiment, the distance between the first roller 134 and the second roller 136 is between about four to six inches." air film " refers to air layer as used in this article, and this air layer is fully pressurized, with the structure a distance making air layer a part for web matrix can be supported on distance ejection forced air.
Each in first and second air film supporting modules 130 and 132 is connected to fluid supply apparatus 140, and this fluid supply apparatus provides flow of pressurized fluid by the first conduit 142 and the second conduit 144 to each module 130 and 132.Although each conduit 142 and 144 is depicted as single conduit, each conduit 142 and 144 can apply malleation and negative pressure to the supporting module connected with conduit.See Fig. 6 and the relevant description of the additional detail for conduit 142.In one embodiment, the positive airflow generated by pump 146 provides malleation and negative pressure or vacuum, and this delivery side of pump is connected to Pressure energy accumulator 148.Pump is membrane pump, provides the malleation of about five (5) psi, and about ten (10) inches of water(in H2O) (H
2o) vacuum.Pressure energy accumulator 148 comprises Pressure energy accumulator tank, and what its reduction was produced by pump 146 is delivered to the malleation of supporting module 130 and 132 and the pulsation of negative pressure.Although show single pump, in other embodiments, two or more pumps are used to provide positive air pressure or negative pressure, or identical pump provides malleation and vacuum.Equally, although single Pressure energy accumulator expects, in other embodiments, two or more Pressure energy accumulators can be used.In another embodiment, fluid supply apparatus 140 does not comprise Pressure energy accumulator.
Web transmission equipment 100 is connected to controller 150 and memory 152.Although controller 150 and memory 152 are depicted as and are specifically designed to transmission equipment 100, but in other embodiments, the printer controller being combined with the printer of web transmission equipment 100 is used for controlling the transmission of fluid and the speed of roller 102 rotation, and this transmission equipment comprises supporting module 130 and 132 and fluid supply apparatus 140.
Operation and the control of the subsystems of web transmission equipment 100, parts and function is performed by means of controller 150 and memory 152.Particularly, controller 150 monitors speed and the tension force of web, or depends on and to be stored in memory 152 information to determine to be passedly to be delivered to the malleation of the first and second supporting modules 130 and 132 and the size of negative pressure.Controller 150 is embodied as general or special programmable processor, and it performs programming instruction.Controller 150 is operatively connected to memory 152, to make controller 150 can reading command, and reads and writes the data needed for the programing function in execute store 152.In another embodiment, memory 152 stores one or more value, and this value identification utilizes the tension level of the print media operation print system of at least one type being used for web 106.These parts can be arranged on a printed circuit, or can be arranged to the circuit in special IC (ASIC).Each circuit may be embodied as has independent processor, or multiple circuit can be implemented on identical processor.Or circuit may be embodied as the circuit having discrete parts or be arranged in VLSI circuit.In addition, circuit as herein described may be embodied as the combination with processor, ASIC, discrete parts or VLSI circuit.
Fig. 2 is the schematic diagram of web transmission equipment 100, this web transmission equipment comprise for the web of movable recording media 106 live roll 102 and non-dynamic roller or rotate freely roller 104.In the embodiment of fig. 2, compared with the approximate horizontal structure of Fig. 1, web 106 moves along roughly vertical path.In fig. 2, the first print zone 108 and the second print zone 110 are roughly vertically arranged.Print stations 116 and 118 and air film supporting module 130 and 132 are also roughly vertically arranged.Other orientation of web and relevant print stations and film supporting module is also possible.
Fig. 3 is the front view of the first print stations 116.Fig. 4 is the perspective view of the air film supporting module 130 of the roller 134 and 136 comprising print stations 116.Because supporting module 130 is substantially the same with 132, the description for module 130 is applied to module 132 equally.In another embodiment, supporting module can have different structures, or each supporting module applied pressure can be different.Deposit in an embodiment of dissimilar ink in the first print stations 116 and the second print stations 118, module applies different pressure to adapt to dissimilar ink.
With reference now to Fig. 3 and 4, each roller 104 and 106 comprises contact surface 160 and 162 respectively, when web 134 moves through print zone 108, and contact surface backweb 134.The tension force being introduced web by printer provides catenary suspension type continuous vulcanization to support, and the surface of web is remained more smooth surface by this, and deposit of ink is on this flat surfaces.But web 134 is not physically supported by the first supporting module 130, but to support platen 164 spaced apart with the pneumatic type on the surface defining supporting module 130, makes web be in non-contacting position relative to platen 164.
Module 130 comprises plenum chamber 166, and this plenum chamber receives the pressure fluid from fluid supply apparatus 140 by coupling 168.See for Fig. 6 of additional detail and relevant description.Plenum chamber 166 comprises platen 164, and this platen is separated into multiple region, comprises multiple negative pressure region 170 and multiple barotropic field 172.In the illustrated embodiment in which, negative pressure region and barotropic field interlaced arrangement.The negative pressure that fluid supply apparatus 140 applies by coupling 168 and malleation are delivered to corresponding negative pressure region 170 and barotropic field 172.
Have 1,200 (1200) dpi printhead Fig. 1 horizontal embodiment in, ink roughly sprays on vertically downward direction along the direction that Action of Gravity Field pulls.In this embodiment, decrease speed is in the scope of 3.5mps, and print speed is 500 (500) feet approximately per minute.Deposit of ink in the plane of web, instead of is deposited on roller place by printhead.Therefore, the plane of web is not supported between the rolls by any joint with mechanical support structure, and web can have between the rolls catenary suspension type continuous vulcanization relax.In addition, the web of transmission can comprise the shake because web strain, gram/m paper density of (gsm), the change of speed cause, and the flute profile that produces of the change of the outer span natural frequency of plane and web strain and the shake that causes.
Controlled from printhead to the distance of web plane, substantially to reduce or to eliminate image error.Such as, the change of 25 (25) microns (um) of the distance between printhead to web plane may produce the dropping process alignment error of ten two (12) μm.In addition, web is directly sprayed at printhead and is lacked the shake experienced in the system of described air film supporting module and may cause producing the shake of four ten four (44) μm of peak value to peak value at web edge place on the tangent line of backing roll, at this web edge place, the first row is positioned at the whole apart from upper of each provisional capital 14mm vertical with web transmission direction to last column ink ejector.In one embodiment, between the first roller and the second roller is not about 100 (100) mm by the free span supported, and row is 32mm to the movable width of the printhead of row.7mm distance on every side of the tangent line of roller, flat out-of-plane vibration may greatly exceed the 44um measured in the system of reality.
Plenum chamber 166 comprises platen 164, and this platen is separated into multiple region, and comprise multiple negative pressure region 170 and multiple barotropic field 172, this plenum chamber provides air film to support.Each in multiple negative pressure region 170 comprises multiple aperture, correspondingly to apply vacuum (region 170) or positive airflow (region 172) with each in multiple barotropic field 172.Platen 164 comprises and is arranged on multiple vacuum port in region 170 or passage and the multiple positive airflow aperture in region 172 or passage, to move and to promote the web transmitted from the second layback of the web be arranged near platen 164.
The dual push-pull effort that region 170 and 172 provides has been decayed web vibration, and provides noncontact air film between platen 164 and web.Air film is configured to the contact in order to reduce or to prevent web and platen 164, reduce image-quality problems thus, these problems are included in the wax surface scraping platen on the first side of web and image wax or uncured deposit of ink are on the surface of platen are drawn caused image-quality problems.This may cause the line of defiling and swipe along process direction.Comprising by providing the web transmission equipment that vacuum applies aperture and positive airflow applying aperture, providing the control that the decay of shake, smooth flute profile and stretched wire are lax, especially in heavier web.
As shown in Figure 4, each region 170 and 172 extends to the second sidewall 182 from the first side wall 180 of platen 164.The shape in each region is also roughly rectangle, and has predetermined length and width.The length in each region is defined as vertical with transmission direction, and width is defined as parallel with transmission direction.The length in region is determined according to the Breadth Maximum of the medium be just transmitted.Such as, if the wide web of ten eight (18) inches carries out imaging, so the length in region is until ten eight (18) inches from about ten seven five (17.5) inches.Zone length does not need identical with the width of medium.In other embodiments, the zone length in aperture regulates according to the width of the web be just transmitted.In one embodiment, plenum chamber comprises multiple chamber, and each chamber can operatively be connected to positive pressure source or negative pressure source.If the width of the web of transmission is less than the adaptable Breadth Maximum of printer, so some chamber of pressure is provided to close or disconnect with fluid supply apparatus towards medium edge.Like this, the medium of different in width is adapted to.
Region ratio (i.e. vacuum area 170 and the ratio just flowing region 172) makes to adopt less membrane pump.Usually, the area of vacuum area 170 is about three (3) times of the area of barotropic field 172.In one embodiment, membrane pump provides the malleation of five (5) pound per square inches (psi), and the inlet side of same pump provides ten (10) inch H
2the vacuum of O.As mentioned above, in one embodiment, the supply of two kinds of pressure sources is pumped in Pressure energy accumulator tank 148, to reduce the pulsation of the pressure being delivered to platen 164.Be in an embodiment of 500fpm in web speed, the air carried secretly between printhead and platen keeps the surface of platen 164 and being separated between web.Compared with applied pressure during web comparatively low velocity, along with web speed increases, pressure reduces.
Fig. 5 shows the interlaced area of vacuum area 170 and barotropic field 172.The interaction that malleation and negative pressure region produce forms air film, and this air film provides the pad of the abutment pressure between platen and web.In one exemplary embodiment, web is supported by air film, and between roller 134 and 136, (and in the middle of concrete span between two rolls) can not form elevated regions or bulge in web.In order to provide the air film imaging surface of web being remained substantially flat surface, the air-flow produced is considered to be roughly less, to provide gap between platen 164 and web.Flow is roughly the mark of cubic feet every meter (camp).In one embodiment, in the gap providing about 50 (50) μm from roller 134 to the whole span of roller 136.In such configuration, the tolerance of the thickness of air film remain ± ten (10) μm.In one embodiment, the target of flatness is the expectation displacement stroke of about 5 to 10%.
The level of Fig. 1 and 2 and vertical structure roughly comprise the air film of the similar or identical thickness being approximately 50 μm.But, compared with other embodiment, in one embodiment, can be different both the positive airflow needed for air film being provided and angrily flowing.Because the stretched wire that the web in vertical structure can not stand amount identical with horizontal tectonics relaxes, so in certain embodiments, keep expecting that the air-flow needed for thin layer of air is different.But in often kind of structure, thin layer of air should provide comparatively smooth its surface, ink sprays on a surface.
In other embodiments, the air-flow applied and the amount of vacuum are changes on whole platen 164.According to the distance between roller, different from towards the region applied pressure of the mid portion between roller towards roller applied pressure.
As shown in Figures 3 and 4, the upper surface in positive airflow region 172 is recessed into from the upper surface of negative flow area 170.In other embodiments, the upper surface in each region 170 and 172 is coplanar.In addition, although show without space, aperture 183 between adjacent region 170 and 172, these regions are dispensable.In other embodiments, the aperture in a region can be close to the aperture in another region, or mutually mixes along the edge of adjacent area.
In another embodiment, positive airflow aperture and vacuum port are not limited to region, but mutually can mix on whole platen or in predetermined areas.In these structures, on whole platen or in some region of platen, positive airflow aperture and the tight-lipped neighbour of discharge orifice that does something in a fit of pique.In one embodiment, the region with single type aperture can be arranged to adjacent with the region with two type apertures.Other embodiment comprises, and the staggered hole of multiple diameter is arranged on whole platen or is arranged in some region of platen.
In certain embodiments, aperture defines the cross section of circular.In other embodiments, other structure in hole is circular, oval, rectangle and with slit.
In each described embodiment, positive airflow and angrily both stream produce thin layer of air (foil), the less desirable motion of this thin layer of air decay web, and floating for the web one-tenth image side to web fully can not be out of shape and affect the situation of correct imaging.The flow of positive airflow and angrily stream should disturb ink to be injected in the web of injection ink.Such consideration will be carried out when different antiquarians carries out imaging.Equally, the structure of thin layer of air support member and air-flow should be directed into the hot property making air-flow can not affect printhead, and the active that this hot property may affect injector is sprayed.
In one embodiment, the thickness of thin layer of air is predetermined, and can not change when dissimilar medium carries out imaging.Because Jie's qualitative attribution (comprising density) may change according to the type of medium, so controller is configured to provide a kind of thin layer of air in other embodiments, this thin layer of air has the thickness that can carry out by regulating the pressure of platen and roller and position regulating.In the thin-medium of a type, such as, in onion-skin, the pressure size of thin layer of air and the pressure of thicker medium (such as letter paper) vary in size.The user interface (not shown) of controller enables operator or user configure the controller signals being delivered to fluid supply apparatus 140 from controller, to provide the thin layer of air of expectation.The automatic detection of media type is also possible.Therefore, according to the one or more malleations selecting vacuum pressure and the applying applied in following factor: the distance between roller; The type of medium, comprises thickness and the width of medium; The transmission speed of web; And printhead orientation.
Fig. 6 is the sectional view of the air film supporting module 130 intercepted along the line 6-6 of the air film device of Fig. 4.As shown in Figure 6, plenum chamber 166 is defined as the inner space of module 130, and by platen 164, the first side wall 180, second sidewall 182 (see Fig. 4), the 3rd sidewall 190, the 4th sidewall 192 and limit with the diapire 194 that the first conduit 142 is operatively connected.3rd sidewall 190 and the 4th sidewall are bending, to adapt to the outer surface of roller.Like this, platen 164 (especially the aperture at tie edge place) is close to roller and spaced apart with roller.
The each wall be combined with platen defines plenum chamber 166, and plenum chamber is separated at least vacuum chamber 195 and malleation chamber 196, and each chamber is correspondingly connected to negative pressure catheter 198 and malleation conduit 200.Negative pressure catheter 198 is operatively connected to the negative pressure source of pump 146, and malleation conduit 200 is operatively connected to the positive pressure source of pump 146.Although conduit 142 is depicted as the supernumerary structure around conduit 198 and 200, in another embodiment, do not comprise conduit 142, and conduit 198 and 200 exposes.
Vacuum chamber 195 comprises multiple negative-pressure pipeline 202, and each pipeline is connected to conduit 198 by chamber 195.Each pipeline 202 comprises one or more upright sidewall 204, and this sidewall makes can occur negative pressure at negative pressure region 170 place.Malleation chamber 196 comprises multiple malleation pipeline 206, and each pipeline is connected to conduit 200 by chamber 196.Each malleation pipeline 206 and adjacent negative-pressure pipeline 202 share common sidewalls 204, make can occur malleation at barotropic field 172 place.This structure makes negative pressure region on whole platen, can move malleation to another region 170 from a region 172.In another embodiment, malleation pipeline 206 can comprise sidewall, and this sidewall does not share with sidewall 204, but separates from sidewall 204 and obviously different.
Fig. 7 is the plane of multiple negative pressure regions 170 of Fig. 5 and a part for barotropic field 172.Each in multiple negative pressure region 170 comprises multiple aperture 210, and these apertures are operatively connected to corresponding pipeline 202, and provides negative pressure at the second side place of web 106.Each in multiple barotropic field 172 comprises multiple aperture 212, and these apertures are operatively connected to corresponding pipeline 206, and provides malleation at the second side place of web 106.
Although Fig. 7 shows pressure span 170 have the four row apertures that uniform intervals opens, other structure is also possible.Equally, although pressure span 172 is depicted as have single-row aperture, other structure is also possible.But generally speaking, the quantity in the aperture in pressure span 170 is greater than the quantity in the aperture in pressure span 172.In other embodiments, according to size and the structure of the pressure size and aperture that are fed to aperture, the quantity in the aperture in pressure span 172 can be greater than the quantity in the aperture in pressure span 170.In addition, although aperture 210 and 212 is depicted as have identical size and structure, in other embodiments, aperture is of different sizes and constructs.In other embodiments, aperture is not round-shaped, but comprises slit, ellipse and/or cross.
Line 214 shows the position of a part for the sidewall 204 extended from the surface of the platen defining barotropic field 180.Medially be positioned between adjacent sidewall 204 although the row in aperture 212 are roughly depicted as, in other embodiments, the row in aperture 212 need not medially arrange.In other embodiments, aperture 210 and 212 is not that layout is in column, but interlaced arrangement.Therefore, the size in aperture can be selected according to the size of the positive air pressure and/or negative pressure that are delivered to platen with structure.
Claims (10)
1. a web transmission equipment, it is for being transmitted through printhead by the continuous web of recording medium, and the position of described printhead defines print zone, and in described print zone ink inside deposition, to carry out imaging to described continuous web, described web transmission equipment comprises:
First roller, described first roller is configured to described web to be transmitted through described print zone;
Second roller, described second roller is configured to described web to be transmitted through described print zone;
Air film system, described air film system is configured to provide positive air pressure and negative pressure to form air film to the surface of described continuous web, and in described continuous web in described print zone during imaging, a part for described continuous web leans against on described air film.
2. web transmission equipment according to claim 1, described air film system also comprises:
Air film module, described air film module installation is between described first roller and described second roller, and described air film module has more than first the first aperture and more than second the second apertures.
3. web transmission equipment according to claim 2, described air film system also comprises:
Pneumatic means, described pneumatic means is operatively connected to described air film module, and is configured to provide positive air pressure and negative pressure to described air film module.
4. web transmission equipment according to claim 3, described air film module also comprises:
Multiple first aperture, described multiple first aperture is operatively connected to described pneumatic means, to provide positive air pressure in the surface of described continuous web; And multiple second aperture, described multiple second aperture is operatively connected to described pneumatic means, to provide negative pressure in the surface of described continuous web.
5. web transmission equipment according to claim 4, wherein said multiple first aperture is arranged in described air film module with multiple first aperture group, and described multiple second aperture is arranged in described air film module with multiple second aperture group, described first aperture group and described second aperture group are located alternately.
6. web transmission equipment according to claim 4, wherein said first aperture and described second aperture relative to each other interlock.
7. web transmission equipment according to claim 4, each in wherein said first aperture is less than each in described second aperture.
8. web transmission equipment according to claim 4, wherein said pneumatic means comprises pump, and wherein said pump produces described positive air pressure and described negative pressure.
9. web transmission equipment according to claim 8, it also comprises:
Pressure energy accumulator, described Pressure energy accumulator is operatively connected between described pump and described air film module, and described Pressure energy accumulator is configured to the impact of the change of at least one in the described positive air pressure that reduces to produce described pump and described negative pressure.
10. web transmission equipment according to claim 9, wherein said first aperture is operatively connected to described Pressure energy accumulator, to provide described positive air pressure to the surface of described continuous web.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/941,755 US9010925B2 (en) | 2013-07-15 | 2013-07-15 | Air film support device for an inkjet printer |
| US13/941755 | 2013-07-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104290463A true CN104290463A (en) | 2015-01-21 |
| CN104290463B CN104290463B (en) | 2017-04-26 |
Family
ID=52107547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410305564.6A Expired - Fee Related CN104290463B (en) | 2013-07-15 | 2014-06-30 | Air film support device for inkjet printer |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9010925B2 (en) |
| JP (1) | JP6207471B2 (en) |
| CN (1) | CN104290463B (en) |
| DE (1) | DE102014212664A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565018A (en) * | 2016-01-11 | 2016-05-11 | 京东方科技集团股份有限公司 | Film supply device and control method thereof |
| US10086526B2 (en) * | 2016-10-04 | 2018-10-02 | Geo. M. Martin Company | Puffer pan |
| JP2018140564A (en) * | 2017-02-28 | 2018-09-13 | 株式会社桜井グラフィックシステムズ | Printer |
| US9889995B1 (en) * | 2017-03-15 | 2018-02-13 | Core Flow Ltd. | Noncontact support platform with blockage detection |
| IT202100009581A1 (en) * | 2021-04-16 | 2022-10-16 | Cefla Soc Cooperativa | EQUIPMENT FOR DIGITAL PRINTING ON A CONTINUOUS TAPE |
| DE102022102162A1 (en) | 2022-01-31 | 2023-08-03 | Eitzenberger Luftlagertechnik Gmbh | floating unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08281923A (en) * | 1995-04-03 | 1996-10-29 | Xerox Corp | Recording sheet carrying/effluent removing device |
| US5576754A (en) * | 1993-04-02 | 1996-11-19 | Scitex Corporation Ltd. | Sheet holding device for an arcuate surface with vacuum retention |
| US5717446A (en) * | 1994-12-12 | 1998-02-10 | Xerox Corporation | Liquid ink printer including a vacuum transport system and method of purging ink in the printer |
| CN1832861A (en) * | 2003-06-25 | 2006-09-13 | 株式会社理光 | Liquid container, sub tank, liquid discharge apparatus, liquid supply apparatus, and imaging apparatus |
| CN102026560A (en) * | 2008-03-11 | 2011-04-20 | 科福罗有限公司 | Method and system for locally controlling support of a flat object |
| CN102381038A (en) * | 2010-08-23 | 2012-03-21 | 施乐公司 | Method and apparatus for purging and supplying ink to an inkjet printing apparatus |
| JP2012506805A (en) * | 2008-10-28 | 2012-03-22 | インカ・ディジタル・プリンターズ・リミテッド | Moving the substrate in the printer |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5798825A (en) | 1997-01-31 | 1998-08-25 | Eastman Kodak Company | Air bearing imaging platen |
| JP4518584B2 (en) * | 1998-11-06 | 2010-08-04 | 株式会社ミヤコシ | Inkjet printer |
| JP2001080802A (en) * | 1999-09-16 | 2001-03-27 | Copyer Co Ltd | Image forming device |
| US6781684B1 (en) * | 2000-11-07 | 2004-08-24 | Donald L. Ekhoff | Workpiece levitation using alternating positive and negative pressure flows |
| US6442369B1 (en) | 2000-11-27 | 2002-08-27 | Xerox Corporation | Air bearing mechanism for flattening paper in a printing machine |
| JP4604363B2 (en) * | 2001-02-05 | 2011-01-05 | セイコーエプソン株式会社 | Continuous paper printing method and printing apparatus |
| DE50303820D1 (en) | 2003-05-08 | 2006-07-27 | Oppenweiler Binder Gmbh Maschb | Sheet aligning device with a blown air hold down device |
| JP4767251B2 (en) * | 2004-04-14 | 2011-09-07 | コアフロー サイエンティフィック ソリューションズ リミテッド | A method for focusing an optical inspection apparatus on a contact surface of a flat object |
| JP2006264814A (en) * | 2005-03-22 | 2006-10-05 | Fuji Photo Film Co Ltd | Web winding and replacing method and device |
| US7461933B2 (en) | 2005-12-07 | 2008-12-09 | Xerox Corporation | Sheet heater assembly having air bearing platelets |
| US7828423B2 (en) | 2007-07-05 | 2010-11-09 | Xerox Corporation | Ink-jet printer using phase-change ink printing on a continuous web |
| JP5617124B2 (en) * | 2010-01-22 | 2014-11-05 | 株式会社ミマキエンジニアリング | Inkjet printer and media conveying method |
-
2013
- 2013-07-15 US US13/941,755 patent/US9010925B2/en not_active Expired - Fee Related
-
2014
- 2014-06-27 JP JP2014133337A patent/JP6207471B2/en not_active Expired - Fee Related
- 2014-06-30 DE DE102014212664.9A patent/DE102014212664A1/en not_active Withdrawn
- 2014-06-30 CN CN201410305564.6A patent/CN104290463B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5576754A (en) * | 1993-04-02 | 1996-11-19 | Scitex Corporation Ltd. | Sheet holding device for an arcuate surface with vacuum retention |
| US5717446A (en) * | 1994-12-12 | 1998-02-10 | Xerox Corporation | Liquid ink printer including a vacuum transport system and method of purging ink in the printer |
| JPH08281923A (en) * | 1995-04-03 | 1996-10-29 | Xerox Corp | Recording sheet carrying/effluent removing device |
| CN1832861A (en) * | 2003-06-25 | 2006-09-13 | 株式会社理光 | Liquid container, sub tank, liquid discharge apparatus, liquid supply apparatus, and imaging apparatus |
| CN102026560A (en) * | 2008-03-11 | 2011-04-20 | 科福罗有限公司 | Method and system for locally controlling support of a flat object |
| JP2012506805A (en) * | 2008-10-28 | 2012-03-22 | インカ・ディジタル・プリンターズ・リミテッド | Moving the substrate in the printer |
| CN102381038A (en) * | 2010-08-23 | 2012-03-21 | 施乐公司 | Method and apparatus for purging and supplying ink to an inkjet printing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| US9010925B2 (en) | 2015-04-21 |
| JP2015016690A (en) | 2015-01-29 |
| CN104290463B (en) | 2017-04-26 |
| DE102014212664A1 (en) | 2015-01-15 |
| JP6207471B2 (en) | 2017-10-04 |
| US20150015651A1 (en) | 2015-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104290463A (en) | Air film support device for inkjet printer | |
| US9327513B2 (en) | Pressure regulating unit, liquid supplying apparatus, and liquid ejecting apparatus | |
| JP5375669B2 (en) | Liquid ejection head, liquid droplet ejection apparatus, and image forming apparatus | |
| US8033624B2 (en) | System and method for printing a continuous web employing a plurality of interleaved ink-jet pens fed by a bulk ink source | |
| US8770722B2 (en) | Functional liquid deposition using continuous liquid | |
| JP6090560B2 (en) | Liquid ejector | |
| US7854497B2 (en) | Fluid ejection device | |
| JP6658353B2 (en) | Liquid discharge head, liquid discharge unit, device for discharging liquid | |
| JP2007030450A (en) | Ink supply system installed in image recorder | |
| JP2008023793A (en) | Liquid jet head and image forming apparatus | |
| CN110891792B (en) | Fluid ejection device with enclosed lateral channels | |
| JP2006264268A (en) | Liquid delivery head | |
| JP2009179049A (en) | Liquid droplet discharge head and droplet delivering device | |
| JP2018154072A (en) | Liquid discharge head, liquid discharge unit, and liquid discharge device | |
| US20190118533A1 (en) | Fluid ejection head and fluid ejection apparatus | |
| JP2022060431A (en) | Liquid discharge head and liquid discharge device | |
| JP2019130872A (en) | Liquid ejection head, liquid ejection unit, and device ejecting liquid | |
| TW200831297A (en) | Fluid ejection device | |
| JP2007098807A (en) | Liquid discharge apparatus and image forming apparatus | |
| EP1673227B1 (en) | Apparatus for depositing droplets | |
| US11001070B2 (en) | Independent reservoirs for supplying a print fluid to a flow-through printhead | |
| US7762648B2 (en) | Liquid ejection apparatus and image forming apparatus comprising liquid ejection apparatus | |
| JP2009298014A (en) | Inkjet recording device | |
| JP5413168B2 (en) | Image forming apparatus | |
| JP2018118383A (en) | Inkjet printer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20210630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |